puking up blood?

Okay so I'm not sure what to do or if I can do anything. I'm 8 weeks(sure it doesn't have anything to do with it) A couple hours ago I threw up and it kind of kept coming up but I felt so much better after. I went to lay back down for about another hour. I went to use the bathroom before bed and unnoticed a spot on the tolite that looked like blood, and it had a chunk stuck to it so I know it was from me puking. And when I was throwing up I noticed some dark stuff looked red but I didn't have the light on(I have a night light in the bathroom so I just didn't turn the actual one on) and I didn't think anything about it because I was just eating grilled cheese with tomato soup so I thought that could of been it. But after seeing that spot I think it's blood. My throats still hurts a little bit from puking and I don't puke much. I often feel like I'm going to but that was the first time I puked in over a week and that was the first time that happened. So Any suggestions what I should do? Since I'm uncertain?